81115660

素因数分解:

$2^2\times 5^1\times {\mathrm{653}}^1\times {\mathrm{6211}}^1$

素因数の和:6873

約数の個数: 24

約数和(自身を含む): 170631216

約数和(自身を除く): 89515556

約数列:

[1, 2, 4, 5, 10, 20, 653, 1306, 2612, 3265, 6211, 6530, 12422, 13060, 24844, 31055, 62110, 124220, 4055783, 8111566, 16223132, 20278915, 40557830, 81115660]

約数ペア:

[(1, 81115660), (2, 40557830), (4, 20278915), (5, 16223132), (10, 8111566), (20, 4055783), (653, 124220), (1306, 62110), (2612, 31055), (3265, 24844), (6211, 13060), (6530, 12422)]